MV Agusta F4 frecce tricolori Manuel De L'utilisateur page 126

Now, press "OK" for over four seconds to delete the
value. Otherwise, press "SET" for less than four sec-
onds to stop the deletion procedure.
Subsequently, by pressing the flashing high beam
headlight key followed by the "OK" key for more than
four seconds, all the previously acquired times can be
cancelled.
Once all the data have been cancelled, press the
"SET" key to return to the "LAPS VIEW" mode and then
to the following mode.
OPERATION
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